Gate link access by login level

Disable open/copy for non-allowed services based on anonymous/logged-in/admin email tiers and show an '접근 제한' tag on restricted cards.

Co-authored-by: Cursor <cursoragent@cursor.com>

styles.css

@@ -655,10 +655,20 @@ html[data-theme="light"] .favicon .letter {
   color: rgba(180, 255, 210, 0.9);
 }
 
+ .tag.lock {
+  border-color: rgba(239, 68, 68, 0.32);
+  background: rgba(239, 68, 68, 0.08);
+  color: rgba(255, 200, 200, 0.92);
+}
+
 html[data-theme="light"] .tag.fav {
   color: rgba(0, 120, 70, 0.92);
 }
 
+html[data-theme="light"] .tag.lock {
+  color: rgba(140, 20, 20, 0.9);
+}
+
 .card-actions {
   margin-top: 12px;
   display: flex;
@@ -666,6 +676,14 @@ html[data-theme="light"] .tag.fav {
   flex-wrap: wrap;
 }
 
+.card.disabled {
+  opacity: 0.78;
+}
+
+.card.disabled:hover {
+  transform: none;
+}
+
 .mini {
   padding: 9px 10px;
   border-radius: 12px;